Re: [PATCH v2] timer: fix NR_CPUS=1 build with gcc13

[George Dunlap <george.dunlap@xxxxxxxxx>]

On Thu, Sep 14, 2023 at 3:32 PM Jan Beulich <jbeulich@xxxxxxxx> wrote:
>
> Gcc13 apparently infers from "if ( old_cpu < new_cpu )" that "new_cpu"
> is >= 1, and then (on x86) complains about "per_cpu(timers, new_cpu)"
> exceeding __per_cpu_offset[]'s bounds (being an array of 1 in such a
> configuration). Make the code conditional upon there being at least 2
> CPUs configured (otherwise there simply is nothing to migrate [to]).
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

I would still have preferred the code be more robust for the NR_CPUS >
1 case, but this is an improvement, so in any case:

Acked-by: George Dunlap <george.dunlap@xxxxxxxxx>